Classifications

• • C—CHEMISTRY; METALLURGY
  • C05—FERTILISERS; MANUFACTURE THEREOF
  • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
  • C05D9/00—Other inorganic fertilisers
  • C05D9/02—Other inorganic fertilisers containing trace elements
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S71/00—Chemistry: fertilizers
  • Y10S71/02—Chelating agent
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S71/00—Chemistry: fertilizers
  • Y10S71/904—Carrier

Definitions

• the present invention relates to a pH-adjusting and chlorine reducing composition to be used in the adjustment of feeding-water for plants, which composition preferably contains the mineral nutrients necessary for the plants.
• the object of the present invention is to obtain an improved fertilizer, pH-adjusting and chlorine reducing composition which in dry form, can be added to the water used for watering of plants, and then particularly house plants.
• pH-adjusting agents which in the form of a solution are added to a watering water to adjust the pH to about 6.5.
• Such agents are preferably used in alkaline, calcium-rich water, where the pH very often exceeds 7. The adjustment is thereby carried out possibly together with calcium-precipitation.
• the present invention is characterized in that the composition comprises mineral nutrients in such an amount to give nutrition to the plants to which the water is added, whereby one or more of the mineral nutrients are added in the form of two or polyvalent acids or acid salts to adjust pH; 0.01-5% by weight of water soluble thiosulphate; and moreover a disintegration agent being swellable in water; and that the composition is present in the form of a dry dosage unit soluble in water.
• starting material A First a micronutrient peparation in dry form was prepared, which was called starting material A:
• the a macronutrient preparation in dry form was prepared, which was called starting material B:
• preparation B is mixed and ground in a mill suited hereto.
• micro-crystalline cellulose (AVICEL sold by Mont Oil)
• the components are thoroughly mixed and tabletted in a tabletting machine to yield 100 tablets having a weight of 1 g each.
• the tablets are intended to be dissolved in 2 liters of water, and are thus provided with a score to be able to be readily divided into two pieces, each to be added to 1 liter of water.
• the tablet dissolves very rapidly in water, whereby it has also surprisingly turned out that the micronutrients present dissolve without flocculation as they immediately form chelates at the dissolution in water.
• the reason why the tablet dissolves so fast in water is that the micro-crystalline cellulose present in the tablet, absorbs water, swells, and thereby breaks the tablet, so that the water-soluble substances present will become more rapidly and more easily available for dissolution.
• the composition according to EX. 1 above gives at the dissolvation in water having a normal pH a final pH of 6.5. pH can however vary somewhat depending on the pH of the ingoing water, but will be somewhere between 5.5 and 7.0, preferably 6.2-6.8.
• the pH-adjustment in the fertilizer is obtained by means of buffering compounds present in the composition, such as K 2 HPO 4 , KH 2 PO 4 , Na 2 HPO 4 , NaH 2 PO 4 , H 3 PO 4 , NH 4 H 2 PO 4 , (NH 4 ) 2 HPO 4 , H 3 BO 3 , the two first mentioned being the most suitable ones.
• the components are thoroughly mixed and are tabletted into tablets having a weight of 1 g each in accordance with Ex. 1 above.
• This tablet having a weight of 1 g is intended to be dissolved in 1 liter of water, whereby the pH of the water will be 6.5.
• pH can, as mentioned above, vary between 5.5-7.0, whereby partly the ingoing water has an influence on the final pH, partly the amounts of buffering compounds
• Some waters are more acid or alkaline than others, e.g. they may have a strong alkalinity, whereby a greater buffering capacity is needed than if the alkalinity is weaker.
• Some plants can and will have another pH than most other plants and thus require another buffer composition.
• the amount of thiosulphate has been said to be 0.01-5% by weight, but is preferably 0.1-0.5% by weight, which will take care of most occuring chlorine concentrations in standard tap water delivered in our cities.
• the amount of thiosulphate in the final preparation of watering water should be 0.5-5 mg/liter, whereby 1-1.5 mg/liter is a standard value. Having a water with very high concentrations of chlorine the upper value should be used to guarantee a total reduction of chlorine present.
• micronutrients and macronutrients present in a dosage unit are so selected that a suitable concentration of fertilizer is maintained in the growth medium of the plant and is present in such an amount that corresponds to the need of the plant between waterings, i.e. in such an amount that neither an impoverishment or an accumulation of nutrients is obtained, which is detrimental to the plants.
• the stearic acid present in the tablet preparation above is present in order to obtain a greasing of the tablet punches during the tabletting operation and to bind the tablets together.
• the substance can be replaced by other substances known in the art of tabletting and for that purpose.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Inorganic Chemistry (AREA)
• Organic Chemistry (AREA)
• Fertilizers (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20344639

Family Applications (1)

Country Status (5)

Cited By (1)

Citations (10)

• 1981
  • 1981-09-28 SE SE8105705A patent/SE430982B/sv not_active IP Right Cessation
• 1982
  • 1982-09-17 US US06/419,428 patent/US4472186A/en not_active Expired - Fee Related
  • 1982-09-24 NO NO823241A patent/NO157778C/no unknown
  • 1982-09-27 FI FI823306A patent/FI70403C/fi not_active IP Right Cessation
  • 1982-09-27 SE SE8205493A patent/SE8205493L/xx not_active Application Discontinuation
  • 1982-09-27 DK DK427982A patent/DK427982A/da not_active Application Discontinuation

Patent Citations (10)

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